Nearly four centuries after Shakespeare's death, a new play by the playwright might be entering the canon. Rumors have abounded of the Bard's "Lost Play" since the early 18th century, when Lewis Theobald claimed that his play Double Falsehood was based on original texts of Shakespeare’s lost Cardenio, which had been performed in 1613. Theobald’s claims were widely dismissed as a hoax, but Nottingham University Professor Brean Hammond has found new evidence supporting them, saying, "I don’t think you can ever be absolutely 100 percent but, yes, I am convinced that it is Shakespeare." Experts say that Theobald’s play is similar to other Shakespeare works, though Hammond described it as "flawed." His research has been endorsed by Shakespeare publisher Arden, and the play may even be performed by the Royal Shakespeare Company in Stratford.